Microsoft has urged the Trump administration to abandon a proposed ban on Chinese‑made optical transceivers, a move that could jeopardize the rollout of AI‑focused data centers across the United States, according to Reuters. The technology, which converts electrical signals to light for fiber‑optic transmission, is a critical component for connecting servers, routers and switches in modern cloud facilities.

Potential impact on data‑center construction

Microsoft estimates it has 35 data centers under construction and plans for another 134, and a shortage of transceivers could stall or even halt those projects, the report says. John Miller, general counsel at the Information Technology Industry Council, warned that the ban could “really threaten” data‑center construction, noting that many cloud operators have already purchased AI chips that would sit idle without the necessary optical components.

Regulatory backdrop and technical scope

The Federal Communications Commission is drafting the ban and is reportedly weighing a limit of 3.2 terabits per second, which would apply to newer, higher‑capacity transceiver modules while exempting older equipment, Reuters cited. A Morgan Stanley note highlighted that production of 3.2‑terabit transceivers is not expected to ramp up until 2028, giving U.S. manufacturers a narrow window to scale up.

Chinese companies such as Eoptolink and Zhongji Innolight dominate roughly two‑thirds of the global market, according to Counterpoint Research, while U.S. firms Coherent and Lumentum lack comparable volume capacity.

Legislative and security considerations

A bipartisan bill introduced in September would restrict Chinese transceivers only in classified government systems, a narrower approach than the FCC’s broader commercial proposal. U.S. officials have expressed concerns that Chinese‑sourced components could be used for espionage or sabotage, a risk cited in the regulatory discussions.

The debate coincides with broader scrutiny of AI data‑center energy and water consumption, adding pressure on policymakers to balance national security with industry growth.

What to watch next

Key upcoming developments include the FCC’s final decision on the transceiver ban, any formal response from the White House, and potential legislative action that could reshape the scope of the restriction. Observers will also monitor how quickly U.S. manufacturers can increase capacity to meet projected demand for high‑speed optical modules.